Ok. I think your claims are all expressed clearly now.
Skid Low and World’s Way claim:
The Canon Law of the Eastern Catholic Churches was written to include the option of giving the Eucharist to a dying Orthodox christian in need that believes in the True Faith but is schismatic. The canon is an opening for abuse that denies the dogma of unity in the Eucharist and that makes the Byzantine church not a Catholic option, contaminated and non-Catholic as well as heretical.
I think that I have regurgitated your position faithfully to what you are claiming.
The claim follows the typical pattern of classic SSPX crisis evaluation. It looks weak at first, but does make a solid point, with me at least.
Do I believe that it undermines my position. No, but it does raise an eyebrow.
If the Byzantine Church were sharing Holy Communion with Orthodox and showing in its teachings that it did not believe the Orthodox to be correct, it would raise more than an eyebrow. It would signal to be religious indifferentism and I would leave my defense of it to the side. (Flipping and flopping. Right? Nah. That’s coherency.)
My advice to the both of you is that if the appearance in CCEO of 671 is enough for you to crisis police your boundary and dismiss the Byzantine Church as not Catholic, then that is your own decision that you make for your Faith. Given the issues with all the other groups holding Tradition, for me it still seems the better Catholic option.